Trilaciclib for the Prevention of Chemoradiotherapy-Induced Myelosuppression in Esophageal Squamous Cell Carcinoma

chemoradiotherapy-induced myelosuppression (CIM) is the most common adverse event of concurrent chemoradiotherapy for esophageal cancer, often leading to reduction, delay or even cessation of chemotherapeutic agents. Clinical treatments for CIM mainly include various hematopoietic growth factors and blood transfusion. However, these interventions target only a single spectrum of blood cells and are susceptible to concomitant adverse events such as bone pain, thrombosis, and fever. Trilaciclib is a potent, transient, reversible CDK4/6 inhibitor and is the world's first innovative drug with lineage-wide myeloprotective effects. Its use in esophageal cancer has not been reported yet. In this study, we investigated the clinical efficacy and safety of trilaciclib in preventing myelosuppression in concurrent chemoradiotherapy for esophageal cancer for the first time.

Inclusion criteria

• age ≥18 years;
• pathological diagnosis of esophageal squamous cell carcinoma;
• failure to undergo surgical treatment;
• completion of definitive chemoradiotherapy or chemoradiotherapy combined with immunotherapy.

Exclusion criteria

• history of other malignant tumors;
• difficulty in follow-up;
• insufficient clinical information.